MGEB12H3 Midterm: MGEB12H3 Midterm Practice Question Set 1

126 views3 pages

turquoisegnu128

16 Oct 2018

School

UTSC

Department

Economics for Management Studies

Course

MGEB12H3

Professor

All

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Some people who bought x-game gaming systems complained about having received defective systems. The industry standard for such systems has been 98% non-defective systems. Suppose that iq test scores of seventh-grade girls in toronto follow a normal distribution with mean m and standard deviation s . From past experience, it is reasonable to assume that s is known to be equal to 100. Test whether the mean iq scores is less than 100 at a 5% significance level and critical value approach. Clearly state the hypothesis to be tested and conclusions. Unfortunately, all data from the research has been lost except for a piece of paper that says the 95 percent confidence interval for m is (88, 102). (10 marks) At a plant making can soups, it is important to fill each can with approximately the same amount (8 ounces). Use = 0. 01 and critical value approach. Clearly state the hypothesis to be tested and conclusions. (5 marks)

Related Questions

To evaluate the proportion of defective components for the supplier Benson has requested a sample shipment of 500 components from each supplier. The number of good components found in each shipment is as followed (Defective A.15 B.20 C.40) (Good A.485 B.480 C.460) answer the following questions 1.formulate the hypothesis that can be used to test for equal proportions of defective components provided by the 3 suppliers 2.using a .05 level of significance conduct the hypothesis test. what is the p-value and what is your conclusion 3.conduct a multiple comparison test to determine if there is an overall best supplier or if one supplier can be eliminated for poor quality

viridianpig408

Benson manufacturing company is considering ordering electronic components from three different suppliers. The supplier may differ in terms of quality in that the percentage of defective componenets may differ among the suppliers. To evaluate the proportion of deffective components for the supplier Benson has requested a sample shipment of 500 componenets from each supplier. The number of good component found in each shipment are as followed (Defective A.15 B.20 C.40) (Good A.485 B.480 C.460) answer the following questions 1.formulate the hypothesis that can be used to test for equal proportions of defective components provided by the 3 suppliers 2.using a .05 level of significance conduct the hypothesis test.what is the p-value and what is your conclusion 3.conduct a multiple comparison test to determine if there is an overall best supplier or if one supplier can be eliminated for poor quality

maroonsardine605

1. A researcher believes that the average size of farms in the U.S. has increased from the 2002 mean of 471 acres. She took a sample of 23 farms in 2011 to test her belief and found a sample mean of 487 acres and a sample standard deviation of 46.9 acres. At a 5% level of significance, test the researcher's claim. What is your conclusion?

2. A study by Hewitt Associates showed that 79% of companies offer employees flexible scheduling. Suppose a researcher believes that in accounting firms this figure is lower. The researcher randomly selects 410 accounting firms and determines that 304 of these firms have flexible scheduling. At a 1% level of significance, does your test show enough evidence to conclude that a significantly lower percentage of accounting firms offer employees flexible scheduling? What is the p-value for this test?

3. The American Lighting Company developed a new light bulb that it believes will last at least 700 hours on average. A test is to be conducted using a random sample of 50 bulbs, and a 1% level of significance. Assume that the population standard deviation is 10 hours. What are the consequences of making a type II error? What is the probability of making a Type II error if the true population mean is 695 hours?

crimsonbeaver577

MGEB12H3 Midterm: MGEB12H3 Midterm Practice Question Set 1

Document Summary

Get access

Related Documents

MGEB12H3 Midterm: MGEB12H3 Assignment 2 2015 Winter

MGEB12H3 Lecture 1: assignment 2 (2015 winter)

MGEB12H3 Study Guide - Final Guide: The Intercept, Homoscedasticity, Null Hypothesis

Related Questions